Check-valve.



A. P. PHILLIPS.

CHECK VALVE. APPLICATION FILED MAR. 9, 1914.

1,173,536. Patented Feb. 29,1916.

PH co., WASHINGTON n c rrnn sra'rs rn'r nnr onion.

ARTHUR P. PHILLIPS, 0F HAVERHILL, MASSACHUSETTS, ASSIGNOR TO CROSBY STEAM GAGE & VALVE COMPANY, A CORPORATION OF MASSACHUSETTS.

CHECK-VALVE.

Specification of Letters Patent.

Patented Feb. 29, 1916.

Application filed March 9, 1914. Serial No. 823,286.

T 0 all'whom it may concern Be it known that I, ARTHUR P. PHILLIPS, a citizen of the United States, and a resident of l laverhill, in the county of Essex and State of Massachusetts, have invented certain new and useful Improvementsin Check- Val'ves, of which the following is a specification.

This invention relates to check valves and its obiect is to provide a valve of simple and compact construction, which may be easily and quickly'assembled, or taken apart, and which is particularly adapted for use with high pressures, being so constructed as to prevent the shock occurring when such pressures are removed, or their direction.

changed.

The invention is illustrated by the accompanvirg drawings in which:

F1gure l 1s a vertical, central, 580131011211 view. partly in elevation, of the valve on the line 1*1 Fig. 2; Fig. 2 is a transverse, central. sectional view, partly in elevation, on the line 22 Fig. 1; Fig. 3 is a view partly in elevat on and partly in section on the line 38 Fig. 1; Fig. 4 is a perspective view of the cup shaped members here inat'ter described.

The casing 1 is furnished with the vertical passage 2 of comparatively small diame er and interiorly enlarged and th eaded at e ther end 3 for attachme t to the devices with which the valve is to be used. as, for in tance. the oil reservoir of a hydraulic press and a pressure gage; said casing be ng furnished centrally with a lateral. threaded bore 4 leading from the exterior at right angles to and extending beyond said first named ver ic l passage 2; said bore being greatl reduced and eccentr cally extended at 5. The exte iorly threaded nut 6 is furnished with a bore 7 and is adapted to be scre ed into and engage the threaded bore 4 of the casing, just described, and is of such length as. when in pla cc, to leave the vertical p ssage 2 through the casing unobstructed. The plug 8 has its inner end 9 enlarged to fit the lateral bore 4 in the casing and its outer end 10 reduced to fit the bore 7 in the nut and is furnished with a transverse passage 11 larger than and adapted. when said plug is in place. to register with the vertical passage 2 through the casing. thus continuing aidpassa go: said plug 8 being furnished with the stud 12 so positioned as to engage plug 8 and are furnished with vertical apertures 14 adapted to register with the vertical passage 2 through the casing, thus preserving the uninterrupted passage therethrough. These members 18 are furnished with sockets 15'adapted to form seats 13 for the ball valve 16, the parts being so proportioned that, when assembled. the mem bers 13 form a chamber in which the ball valve is loosely confined, having a slight vertical as well as lateral play therein. Each of the cups is slotted at 13 thereby provid ing a passage pastthe ball valve when seated, the result being that the passage through the valve. while restricted, is never wholly obstructed. This is a very important provision in valves used with high pressures, as it prevents the sudden jars caused when the pressure is removed, as, for instance, at the end of each operation of the hydraulic press, above mentioned, employed to force axles into wheels, in which operat on the oil isforced into the gage under high pressure, which pressure is remo ed after each ope tion. This feature is fully illustrated "thatit affords easy access to the working parts of the valve and enables the operator to easily remove and replace, or renew them, without removing the main structure, or in any way disturbing it.

Other features of the improvement are its simplicity and compactness and the comparati ely low cost of its manufacture.

I claim:

1. A check valve comprising, in combination, a tubular casing interirrlv enlarged and threaded at both ends and furnished laterally with a threaded bore leading from the exterior thereof and intersecting the passage therethrrugh; a nut exteriorlv threaded for engagement with said lateral bore of the casing and furnished with a longitudinal bore; a tubular plug adapted to fit into the lateral bore in the casing and into the bore in the nut; two cup shaped members disposed in said plug, forming a chamber therein, and furnished with tubular seats; and a ball valve loosely confined in said chamber; said plug and said ball valve being so disposed as to restrict, without entirely obstructing, the passage through the valve casing; and means affording a passage past said ball valve when seated.

2. A check valve comprising, in combination, a tubular casing interiorly enlarged and threaded at brth ends and furnished laterally with a threaded bore leading from the exterior thereof and intersecting the passage therethrcugh; a nut exteriorly threaded for engagement with said lateral,

bore of the casing and furnished with a longitudinal bore; a tubular plug adapted to fit into the lateral bore in the casing and into the bore in the nut; two cup shaped members disposed in said plug, forming a chamber therein, and furnished with tubular seats; and a ball valve loosely confined in said chamber; said plug and said ball valve being so disposed as to restrict, without entirely obstructing, the passage through the valve casing; and means afiording a pas sage past said ball valve when seated; together Withlocking means for preventing the rotation of said plug. I

i 3. A check valve comprising, in combination, a tubular casing interiorly enlarged and threaded at both ends and furnished laterally with a threaded bore leading from the exterior thereof and intersecting the passage therethrough; a nut engaging said passage and having a longitudinal bore; a tubular plug adapted to fit into the lateral bore in the, casing and into the bore in the nut; and a ball valve loosely confined in,

said plug; said plug and said ball valve being so disposed as torestrict, without entirely obstructing, the passage through the valve casing. r

4. A check valve comprlsing, 1n combination, a tubular casing 'intericrlv enlarged and threaded at both ends and furnished laterally with a threaded bore leading from the exterior thereof and intersecting the passage therethrough; a nut engaging said passage and having a longitudinal bore; a tubular plug adapted to fit into the lateral bore in the casing and into the bore in the nut; and a ball valve loosely confined in saidplug: said plug and said ball valve being so disposed as to restrict, without entirely obstructing, the passage through the valve casing, with locking means for pre-- venting the rotation of said plug.

5. In a check valve of the character described, in combination, a tubular casing furnished laterally with a bore leading from the exterior thereof and intersecting the passage therethrough; a tubular plugdisposed in said lateral bore in the casing; and a valve loosely confined in said tubular plug; with means for confining the tubular plug in the lateral here; said valve and said plug being so disposed as to restrict, Without entirely obstructing, the passage through the valve casing.

6. In a check valve of the character described, in combination, a tubular casing furnished laterally with a bore leading from the exterior thereof and intersecting the passage therethrough; a tubularv plug disposed in said lateral bore in the casing; and a valve lo-csely confined in said tubular plug; with meansfor confining the tubular plug in the lateral here; said valve and said plug being so disposed as to restrict, without entirely obstructing,ithe passage through the valve casing; with locking means for preventing the movement of said plug.

In testimony whereof I have affixed my signature, in presence of two Witnesses.

ARTHUR P. PHILLIPS.

Witnesses GEORGE G. CLARK, RALPH \V. FOSTER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0. g 

